Combined bathtub and lifting unit



FIG. 1 is a front elevational view of a combined bathtub and lifting unit showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a rear elevational view thereof. 

The ornamental design of a combined bathtub and lifting unit, as shown and described. 